Adjustable scaffold and scaffold-frame.



No. e3|.954. Patented Aug. 29, |a99.

A. CSORBA. ADJUSTABLE SCAFFULD AND SCAFFOLD FRAME.

(Application filed Nov. 17, 1898.

( No Model.) 4 Sheeis$heet l,

No. 631,954. Patented Aug. 29, I899. A. CSURBA.

ADJUSTABLE SCAFFULD AND SCAFFULD FRAME.

(Application filed Nov. 11, 1898.,

4 SheeisSheet 2,

No. 631,954. Patented Aug. 29, I899.

A. CSURBA.

ADJUSTABLE SCAFFOLD AND SCAFFULD FRAME.

(Application filed Nov. 17, 1898.) (No Model.) 4Sheets-Sheet 3.

1 iii.

1m: noams PETERS 80.. PnoTounqou wAsnmaYou, 0, c.

N0. 613L954. 1 Patented Aug. 29, I899.

A. CSORBA.

ADJUSTABLE SCAFFOLD AND SCAFFOLD FRAME.

(Application filed Nov. 17, 1898.) (No Model.) 4 sheetssheet 4 v WMMVMMm: uonms PETERS cov. moraumn, WASHINGTON, n. c.

UNITED STATES PATENT ANDREAS CSORBA, OF MISKOLCZ, AUSTRIA-HUNGARY.

ADJUSTABLE SCAFFOLD AND SCAFFOLD-FRAME.

SPECIFICATION forming part of Letters Patent No. 631,954, dated August29, 1899. Application filed llovember l7 1898- Serial No. 696,687. (Noniodel.)

' as will enable others skilled in the art to which it appertains tomake and use the same.

The object of my invention is to provide a scafiold of strongconstruction and great sta bility which may be quickly put up and asquickly taken apart and which may be thus used over and over again andbuilt to any desired height.

To such ends my invention consists of the construction, combination, andarrangement of the several parts thereof shown and described in thefollowing specification, of which the accompanying drawings form a part,wherein similar letters of reference designate like or equivalent partswherever found throughout the several views, and in which Figure l is aside View of one form of the foot-frames of my improved scaffold, havingthree legs. Fig. 2 is a front view of Fig. 1, and Fig. 3 is a top Viewof Fig. 1. Fig. 4 is a side view of a similar foot-frame, except that ithas four legs instead of three; and Fig. 5 is a bottom view of Fig. 4.Fig. 6 is a top view of the top of another form of foot-frame havingthree legs and substantially square hollow central connecting-irons,while Fig. 7 is a side view of Fig. 6 in section on the line 2 ,2thereof. Fig. 8 is a top view of a foot-frame with four legs providedwith double connect ing-irons or annular rings, so as to receive twostandards instead of one, as in the case of the constructions beforereferred to. Figs. 9, 10, and 11 are top views of the top portion ofdifierent forms of foot-frames, and Figs. 12, 13, and 14 are differentforms in detail of certain portions of the upper framework of thescaffold. Fig. 15 is a detail view, broken in two, of the upper portionor head'of certain of the standards of the scaffold which are used toextend it upward from the footframes or as cross-braces. Fig. 16 is aview of another form of standard-head. Fig. 17 is a detail View of alock-plate to be used in connection with the head shown in Fig. 16, andFig. 18 is a view of Fig. 16 with the plate shown in Fig. 17 in positionin such head, and Fig. 19 is a View of a head differing only slightlyfrom that shown in Figs. 16 and 18. Fig. 20 is a side view of one of theupper standards used on the outer side of the scaifolding, provided withan attachment for holding railing or guard planksin place; and Fig. 21is a front view thereof in place in a foot-frame provided with aself-locking catch or supporting and lifting device. Fig. 22 is a sideview, and Fig. 23 a top plan view, of my improved scaffolding complete.

Referring to the drawings, the lower or ground section of my improvedform of seatfolding consists of foot portions composed of one or morefeet a, provided with connecting-irons I), having perpendicular passagesthrough the same adapted to receive standard-irons c, which are providedwith lower and upper supporting-heads a d, and d of any suitable shape,preferably of the forms shown. The standard-irons c are usually of Y theI form shown and are provided with slots 6, passing through the centralweb, adapted to receive the lifting point or lug h of a suitable liftinglever g, which is in each case supported upon a pivot carried by one ofthe foot portions at. These lifting levers 9 may be of any desired form,but are usually either of the plain form shown in Fig. 1 or of thatshown in Fig. 7, where the lever is provided with a backwardly-turnedupper lip i to give a closer grip upon the standard-iron c and may insome cases be provided instead of with a plain hole to receive the pivotwith a curved slot g, 9 and g through which such pin passes, wherebywhen the weight of the standard-iron is supported by such lever thelever will be locked by the weight'against accidental displacement, asshown in Fig. 2

A certain number of the standards 0 are provided with only one set ofsupportingheads d. Others are provided with side slots 2 instead ofcentral slots and with link-hooks IOO ward and away from the standard inthe same manner as is one bar of a parallel ruler to and from the other.Certain of the supportingheads cl are provided with sharpened edges,below which are securing-holes 75, Fig. 16, below which are grooves inthe standards 0 to receive the studs. Various other holes or slots areprovided in the supporting-heads and alsoin the standards 0, as shown,at various points to facilitate putting together of the scaffold for allheights, shapes, and sizes of buildings or scaffoldings, andlockingplates 9", having lugs r and central slots r (shown in the lowerviews of the heads shown in detail,) by which the ends of sleepers tohold the planking are kept in place. Keys (shown in Fig. 1) are providedto put through the slots 6 on top of the hollow connecting-irons b.

To erect the staging, the foot portions are placed in the properpositions with the standards c in place therein. The lifting-levers gare then depressed so as to bring one of the slots e above the top ofthe top connectin g-iron and the key 7t, inserted through such slot 6,as shown in Fig. 1. The lifting-lever is then actuated so as to catch inthe next lower slot e, when the standard a is again lifted by the leverg, and this operation is repeated until the standards are at therequired height. The inner and outer standards are then connected bycross standards, also marked 0, Fig. 22, by locking the head and bottomends to the inner and outer upright standards either by suitable boltsor interlockiu g of the heads, and longitudinal floorboards are laid onthese cross-standards, and

after these floor-boards are laid some of the standards which have thesharp-edged supporting-heads and the link-hooks at the other end areplaced in a slanting position, so as to dig the sharp edge of such headinto the floorboards, and the other end being forced down against theinner upright standards the linkhooks are locked into the slots toreceive them in the said inner uprights, whereby the scaifolding will bebraced solidly and thus made rigidly secure. When it is desired to havea guard-rail at the outer edge of thej scafiolding, those standardshaving the par-' allel bars at are used for the outer standards andplanks Z, slipped between the bars 1?. and the standards a, so as torest on the links m, whereby their own weight will serve to hold themrigidly in place, and thus the scaffold will be made more rigid still.stories of scaffolding of narrower form may then be erected on top ofthis bottom portion, as shown in Fig. 22, by the use of single or pluralbase or foot portions resting on the floorboards or planks, and byaddingstandards interlocked together by the head portions thereof arigid scaffolding can be carried up in a very short time to any desiredheight and as quickly taken apart and removed when desired.

Additional All the various heads or interlocking parts are made of theforms shown, and various lengths of standard are provided in largenumber by which innumerable forms and shapes of scaffolding can be made,so that such scaffolding can be used in any and every place where ascaffolding is desired and may be made of extreme lightness orheaviness, according to the weight it is to bear.

Many changes and modifications other than those shown may be made in theconstruction of my said scaffolding or in the construction orarrangement of the Various parts thereof without departing from thescope of my invention, as I do not intend to limit myself to the exactform of construction of the whole or any part thereof or the manner ofcombining the parts thereof shown and described herein.

What I claim, and desire to secure by Letters Patent, is- I 1. Ascafiolding having feet or supporting portions provided with annularconnectingrings for. the reception of sliding standards,

standards supported in the rings of the foot portions, means for lockingthe standards in the rings at any desired height, supportingheadscarried by the standards, or the foot portions or by both,cross-standards for looking the inner and outer standards of thescaffolding together, forming supporting-sills for the flooring of thescaffolding, and a suitable flooring for the scaffolding, thecross-standards and the upright standards being substantially of thesame form and interchangeable, substantially as shown and described andfor the purposes set forth.

2. In a device of the class described, the combination with a pluralityof plural-footed foot portions provided at the top with annular ringsfor the reception of standards,means for locking the standards at anydesired height in the annular rings, cross-pieces provided with heads dadapted to interlock with the standards to form floor-sills, andbracepieces of like form having the heads dand cl provided withsharpened points at one end, and attaching-hooks 0' adapted to enterholes in the standards, substantially as shown and described and for thepurposes set forth.

3. In a device of the class described, the combination with a pluralityof supporting foot portions, of adjustable standards supported thereby,and provided with heads d and d, locking-plates r fitting in the heads(1 and cross sills or pieces lockingthe standards together,substantially as shown and described and for the purposes set forth.

4. In a device of the class described, a combined scaffold standard,sill, or brace provided with a head (1 sharpened at the edges, havingthe holes t and grooves o, a head cl located below the head d and atright angles thereto having the holes T and groove 8, an

, opening q through the standard above the j groove 8, and twolocking-plates 1' having the lugs r and slots 1' adapted to rest in thegroove 8, substantially as shown and described and for the purposes setforth.

5. In a device of the class described, the combination with suitablesupporting foot portions, of standards supported thereby,sillsconnecting the standards together and interlookin g therewith, side bars01., attached to the standards by links m, and guard-rails Z insertedbetween the side bars nand the standards, substantially as shown anddescribed and for the purposes set forth.

6. In a device of the class described, the combin ation with standardsadapted to be adj ustably supported in suitable foot portions, of headsd and d secured thereto at the top at an angle one to the other, andheads a 10- cated below the heads d, substantially as shown anddescribed and for the purposes set forth.

7. In a device of the class described, the combination with a standard 0having the perforations e, of a foot portion adapted to receive theperforated portion of such standard, and a pivoted looking-lever pivotedto the foot portion and having a lug 77. adapted to enter theperforations e so as to support the standard at any desired height inthe foot portion, substantially as shown and described and for thepurposes set forth.

8. Ina device of the class described, the combination with a standard 0having the perforations e, of a foot portion adapted to receive theperforated portion of such standard, and a pivoted locking-lever gpivoted to the foot portion and having the upwardlyturned lug h, theshoulder z', and the curved slot g, g and g through which the supportingpivot-pin passes, so as to support the standard at any desired height inthe foot portion, substantially as shown and described and for thepurposes set forth.

9. In a device of the class described, the combination one with theother of a plurality of standards provided with slots 6 and e, and withheads (I and cl, substantially as shown and described and for thepurposes set forth.

In witness whereof I have signed this speci fication in the presence oftwo witnesses.

ANDREAS GSORBA.

Witnesses:

PETER N. AKERs, LOUIS GERSLER.

